And thus is it written (Psalms 31:24) "The L–rd guards the faithful." The faithfulness of the fathers is brought to remembrance, viz. (Exodus 17:12) "And Aaron and Chur supported his (Moses') hands, and his hands were (lifted in) faithfulness until the sun set." And it is written (Psalms 108:20) "This is the gate to the L–rd. Tzaddikim (faithful in prayer) will enter through it." What is written of the "believers"?
When Moses Raised His Hands During the Battle, Israel Prevailed
Mekhilta Tractate Vayehi Beshalach 7:24